We were there in June, just in time for the final ice melt. You see pictures of it, but it is much, much, better in person. It was really quiet when we were there, but there were still quite a lot of people moving around. Access is pretty good, but there were a few steepish muddy paths to be negotiated to get to the water. Be careful. It was cold too. Rug up. Windy. Brrrr+. People talk about hiking around the place. It is a biiig lake, and we had little kids, cold weather, and not much time. The hotel looks nice. Would definitely like to stay there one day. Oh yes.
There is truly massive amounts of parking on site, and the highway there is a magnificent four lane freeway all the way from Calgary. That means in Summer the place will be packed, and there will be 10,000 other people looking over your shoulder as you soak in the view and enjoy the solitude.
The Banff traffic cops seem to be on Commission or are trying to pay off the freeway or something. It was the only place where we saw Canadians not driving like Canadians. It was also the only place we saw any cops, too, and they were super eager to make new friends with travelers. Watch out.
Oh, they close the restrooms over winter, so don't drink anything, and we didn't see anywhere to get anything to eat. Good luck with that, eh? And there are s-loads of bears in the area, so be careful if you need to go off road to use that big bushy restroom. We saw a mother bear and three cubs just up the road, so wear your runners, or hike with someone who can't run very fast, and whom you don't like very much.
Other than that, plan for an hour going 'Ooooh', and 'Aaaah', and 'If I win Lotto I will stay at this hotel', and then look for that restroom. It's worth it.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.